/*
* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
*    1. Redistributions of source code must retain the above copyright notice, this list of
*       conditions and the following disclaimer.
*
*    2. Redistributions in binary form must reproduce the above copyright notice, this list
*       of conditions and the following disclaimer in the documentation and/or other materials
*       provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* The views and conclusions contained in the software and documentation are those of the
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*/

package mage.abilities.costs;

import java.util.ArrayList;
import mage.abilities.Ability;
import mage.abilities.costs.mana.VariableManaCost;
import mage.game.Game;
import mage.target.Targets;

/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class CostsImpl<T extends Cost> extends ArrayList<T> implements Costs<T> {

	public CostsImpl() {}
	
	public CostsImpl(final CostsImpl<T> costs) {
		for (Cost cost: costs) {
			this.add((T)cost.copy());
		}
	}

	@Override
	public String getText() {
		if (this.size() == 0)
			return "";

		StringBuilder sbText = new StringBuilder();
		for (T cost: this) {
			sbText.append(cost.getText()).append(", ");
		}
		sbText.setLength(sbText.length() - 2);
		return sbText.toString();
	}

	@Override
	public boolean canPay(Ability source, Game game) {
		for (T cost: this) {
			if (!cost.canPay(source, game))
				return false;
		}
		return true;
	}

	@Override
	public boolean pay(Game game, Ability source, boolean noMana) {
		if (this.size() > 0) {
			while (!isPaid()) {
				T cost = getFirstUnpaid();
				if (!cost.pay(game, source, noMana))
					return false;
			}
		}
		return true;
	}

	@Override
	public boolean isPaid() {
		for (T cost: this) {
			if (!((T)cost instanceof VariableManaCost) && !cost.isPaid())
				return false;
		}
		return true;
	}

	@Override
	public void clearPaid() {
		for (T cost: this) {
			cost.clearPaid();
		}
	}

	@Override
	public void setPaid() {
		for (T cost: this) {
			cost.setPaid();
		}
	}

	@Override
	public Costs<T> getUnpaid() {
		Costs<T> unpaid = new CostsImpl<T>();
		for (T cost: this) {
			if (!cost.isPaid())
				unpaid.add(cost);
		}
		return unpaid;
	}

	protected T getFirstUnpaid() {
		Costs<T> unpaid = getUnpaid();
		if (unpaid.size() > 0) {
			return unpaid.get(0);
		}
		return null;
 	}

	@Override
	public Targets getTargets() {
		Targets targets = new Targets();
		for (T cost: this) {
			targets.addAll(cost.getTargets());
		}
		return targets;
	}

	@Override
	public Costs<T> copy() {
		return new CostsImpl(this);
	}

}
